A growing number of workers are reaching retirement age around the globe. At the same time, many countries face a worker shortage, especially in critical areas like health care. Ken Dychtwald, cofounder and CEO of Age Wave, says it’s time for companies to stop overlooking this valuable labor pool, because AI alone won't alleviate the tight supply. He explains why many late-career people want to work longer. And he shares creative and often simple ways that companies can keep older workers engaged, including phased retirements, non-ageist recruiting, mentorship programs, and grandparental leave. Dychtwald is a coauthor of the HBR article "Redesigning Retirement."